 | Florence Pugh als Katherine Lester |
 | Cosmo Jarvis als Sebastian |
 | Paul Hilton als Alexander Lester |
 | Naomi Ackie als Anna |
 | Christopher Fairbank als Boris Lester |
 | Golda Rosheuvel als Agnes |
 | Anton Palmer als Teddy |
 | Rebecca Manley als Mary |
| Fleur Houdijk als Tessa |
 | Cliff Burnett als Father Peter |
 | David Kirkbride als Edward |
 | Bill Fellows als Dr. Burdon |
 | Nicholas Lumley als Mr. Robertson |
| Raymond Finn als Mr. Kirkbride |
 | Ian Conningham als Detective Logan |
 | Finn Burridge als Farmhand #1 |
| Jack Robertson als Farmhand #2 |
 | Kema Sikazwe als Farmhand #3 |
| Elliot Sinclair als Farmhand #4 |
| Andrew Davis als Gentleman #1 |
| Alan Billingham als Gentleman #2 |
| Bailey Palmer als Teddy Double |
| William Oldroyd | Director |
| Jim Reeve | Executive Producer |
| Steve Jenkins | Executive Producer |
| Jacqueline Abrahams | Production Design |
| Thalia Ecclestone | Art Direction |
| Lizzie Francke | Executive Producer |
| Holly Waddington | Costume Design |
| Dan Jones | Original Music Composer |
| Christopher Granier-Deferre | Executive Producer |
| Fodhla Cronin O'Reilly | Producer |
| Ari Wegner | Director of Photography |
| Christopher Moll | Executive Producer |
| Nick Emerson | Editor |
| Sian Wilson | Makeup Designer |
| Nikolai Leskov | Novel |
| George Every | First Assistant Director |
| Dan Jones | Sound Designer |
| Ben Baird | Sound Designer |
| Shaheen Baig | Casting Director |
| Steve Peckover | Sound Recordist |
| Sian Wilson | Hair Designer |
| Pete Smyth | Line Producer |
| Emma Kayee | Production Manager |
| Robert K. Harm | Production Manager |
| Sophie Bugeaud | Costume Supervisor |
| Daniel Nielsen | Visual Effects Supervisor |
| Elin Plantin | Visual Effects Coordinator |
| Chris Chalklen | Title Designer |
| Ben Millar | Gaffer |
| Joe McCall | Foley Editor |
| Claire Pompili | Makeup Artist |
| Kevan Gallagher | ADR Editor |
| Sarah Golding | Script Editor |
| Bhairavi Patel | Script Supervisor |
| Daniel Foeldes | First Assistant Camera |
| Sean Wheelan | Visual Effects Producer |
| Laurie Sparham | Still Photographer |
| Keith Wallis | Fight Choreographer |
| Renny Borthwick | Key Grip |
| Daphnée Hocquard | Production Coordinator |
| Tanaz Nili | Makeup Artist |
| Alice Birch | Writer |
